<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="jquery-3.7.1.min.js"></script>
</head>
<body>
    <button id="btn">按钮</button>

    <script>
        $('#btn').on('click',function(e){
            console.log(e.type)
            console.log(e.target)
            console.log(e.currentTarget)
        })

    </script>
</body>
</html>